Search Publications
Missions
Journals
Publication Years
Origin of metals in old Milky Way halo stars based on GALAH and Gaia
Kobayashi, Chiaki; Tominaga, Nozomu; Nomoto, Ken'ichi +6 more
Stellar and supernova nucleosynthesis in the first few billion years of the cosmic history have set the scene for early structure formation in the Universe, while little is known about their nature. Making use of stellar physical parameters measured by GALAH Data Release 3 with accurate astrometry from the Gaia EDR3, we have selected ~100 old main…
The long period of 3He-rich solar energetic particles measured by Solar Orbiter 2020 November 17-23
Lario, D.; Maksimovic, M.; Vecchio, A. +31 more
We report observations of a relatively long period of 3He-rich solar energetic particles (SEPs) measured by Solar Orbiter. The period consists of several well-resolved ion injections. The high-resolution STEREO-A imaging observations reveal that the injections coincide with extreme ultraviolet jets and brightenings near the east limb, n…
NGTS-14Ab: a Neptune-sized transiting planet in the desert
Bouchy, F.; Erikson, A.; Rauer, H. +35 more
Context. The sub-Jovian, or Neptunian, desert is a previously identified region of parameter space where there is a relative dearth of intermediate-mass planets with short orbital periods.
Aims: We present the discovery of a new transiting planetary system within the Neptunian desert, NGTS-14.
Methods: Transits of NGTS-14Ab were discover…
An Unexpected Whistler Wave Generation Around Dipolarization Front
Wang, Z.; Chen, L.; Zhang, Y. +8 more
Dipolarization front (DF)—a sharp boundary separating hot tenuous plasmas from cold dense plasmas—is followed by a strong Bz region, which is termed flux pileup region (FPR) or dipolarizing flux bundle (DFB). Using 9 year (2001-2009) Cluster data, we show that the FPR hosts whistler waves because of the pancake distribution of electrons…
Overview of the Solar Radiation and Climate Experiment (SORCE) Seventeen-Year Mission
Woods, Thomas N.; Kopp, Greg; Harder, Jerald W. +4 more
The Solar Radiation and Climate Experiment (SORCE) was a NASA mission that operated from 2003 to 2020 to provide key climate-monitoring measurements of total solar irradiance (TSI) and solar spectral irradiance (SSI). Three important accomplishments of the SORCE mission are i) the continuation of the 42-year-long TSI climate data record, ii) the c…
A Blueprint for the Milky Way's Stellar Populations. II. Improved Isochrone Calibration in the SDSS and Pan-STARRS Photometric Systems
Beers, Timothy C.; An, Deokkeun
We improve the identification and isolation of individual stellar populations in the Galactic halo based on an updated set of empirically calibrated stellar isochrones in the Sloan Digital Sky Survey and Pan-STARRS 1 photometric systems. Along the Galactic prime meridian (l = 0° and 180°), where proper motions and parallaxes from Gaia DR2 can be u…
The Cosmic Ultraviolet Baryon Survey (CUBS). II. Discovery of an H2-bearing DLA in the Vicinity of an Early-type Galaxy at z = 0.576
Faucher-Giguère, Claude-André; Johnson, Sean D.; Petitjean, Patrick +18 more
We report the serendipitous detection of an H2-bearing damped Lyα absorber at z = 0.576 in the spectrum of the QSO J0111-0316 in the Cosmic Ultraviolet Baryon Survey. Spectroscopic observations from Hubble Space Telescope-COS in the far-ultraviolet reveal a damped absorber with log[N(H I)/cm-2] = 20.1 ± 0.2 and log[N(H2<…
The Young Massive Star Cluster Westerlund 2 Observed with MUSE. III. A Cluster in Motion—The Complex Internal Dynamics
Sabbi, Elena; Nota, Antonella; Zeidler, Peter +1 more
Analyzing the dynamical state of nearby young massive star clusters is essential for understanding star cluster formation and evolution during their earliest stages. In this work we analyze the stellar and gas kinematics of the young massive star cluster Westerlund 2 (Wd2) using data from the integral field unit Multi Unit Spectroscopic Explorer (…
First observations and performance of the RPW instrument on board the Solar Orbiter mission
Müller, D.; Hellinger, P.; André, M. +107 more
The Radio and Plasma Waves (RPW) instrument on the ESA Solar Orbiter mission is designed to measure in situ magnetic and electric fields and waves from the continuum up to several hundred kHz. The RPW also observes solar and heliospheric radio emissions up to 16 MHz. It was switched on and its antennae were successfully deployed two days after the…
The Far-away Blues: Exploring the Furthest Extents of the Boötes I Ultra-faint Dwarf Galaxy
Wyse, Rosemary F. G.; Filion, Carrie
Establishing the spatial extents and the nature of the outer stellar populations of dwarf galaxies is necessary for the determination of their total masses, current dynamical states, and past evolution. We here describe our investigation of the outer stellar content of the Boötes I ultra-faint dwarf galaxy, a satellite of the the Milky Way. We ide…